package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.result.PageResult;
import com.sky.service.admin.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl  implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();//

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username); //

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    /**
     * 添加员工
     * @param employeeDTO
     * @return
     */
    @Override
    public int addEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //补全其他属性
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setPassword(PasswordConstant.DEFAULT_PASSWORD);
        Long currentId = BaseContext.getCurrentId();
        employee.setCreateUser(currentId);
        employee.setUpdateUser(currentId);

        int row = employeeMapper.addEmployee(employee);
        return row;
    }

    /**
     * 员工分页查询
     * @param epqd
     * @return
     */
    @Override
    public PageResult findEmployeeByPage(EmployeePageQueryDTO epqd) {
        PageHelper.startPage(epqd.getPage(),epqd.getPageSize());

        Page<Employee> employeeByPage = employeeMapper.findEmployeeByPage(epqd);

        PageResult pr = new PageResult(employeeByPage.getTotal(),employeeByPage.getResult());
        return pr;
    }

    /**
     *
     * @param status
     * @param id
     * @return
     */
    @Override
    public int updateStatus(Integer status, long id) {
        int row = employeeMapper.updateStatus(status, id);
        return row;
    }

    @Override
    public Employee findByIdEmpkoyee(Integer id) {
        Employee byIdEmpkoyee = employeeMapper.findByIdEmpkoyee(id);
        return byIdEmpkoyee;
    }

    @Override
    public int updateEmployee(EmployeeDTO employeeDTO) {
        int row = employeeMapper.updateEmployee(employeeDTO);
        return row;
    }


}
